I agree with your sentiment. I have previously advocated that Array.isArray should be transparent for proxies. My harmony-reflect shim explicitly differs from the spec on this point because people using the shim spontaneously reported this as the expected behaviour and thought it was a bug that Array.isArray didn't work transparently on proxies.
As far as I can remember, the argument against making Array.isArray transparent is that it's ad hoc and doesn't generalize to other types / type tests. My opinion is that array testing is fundamental to core JS and is worth the exception. Regards, Tom 2014-11-12 17:04 GMT+01:00 Axel Rauschmayer <[email protected]>: > The subject is a SpiderMonkey bug. > > Is that really desirable? Doesn’t it invalidate the Proxy’s role as an > interceptor? > > -- > Dr. Axel Rauschmayer > [email protected] > rauschma.de > > > > > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss > >
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